Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Comparative Study
. 1987 Dec;53(12):2849-53.
doi: 10.1128/aem.53.12.2849-2853.1987.

Fermentation of xylans by Butyrivibrio fibrisolvens and other ruminal bacteria

Affiliations
Comparative Study

Fermentation of xylans by Butyrivibrio fibrisolvens and other ruminal bacteria

R B Hespell et al. Appl Environ Microbiol. 1987 Dec.

Abstract

The ability of Butyrivibrio fibrisolvens and other ruminal bacteria (6 species, 18 strains) to ferment a crude xylan from wheat straw or to ferment xylans from larchwood or oat spelts was studied. Liquid cultures were monitored for carbohydrate utilization, cell growth (protein), and fermentation acid production. B. fibrisolvens 49, H17c, AcTF2, and D1 grew almost as well on one or more of the xylans as they did on cellobiose-maltose. B. fibrisolvens 12, R28, A38, X10C34, ARD22a, and X6C61 exhibited moderate growth on xylans. Partial fermentation of xylans was observed with Bacteroides ruminicola B14, Bacteroides succinogenes S85, Ruminococcus albus 7, Ruminococcus flavefaciens C94 and FD1, and Succinivibrio dextrinosolvens 22B. All xylans tested appeared to have a small fraction of carbohydrate that supported low levels of growth of nonxylanolytic strains such as Selenomonas ruminantium HD4. Compared to growth on hexoses, the same array of fermentation acids was produced upon growth on xylans for most strains; however, reduced lactate levels were observed for B. fibrisolvens 49 and Selenomonas ruminantium HD4. Measurements of enzyme activities of B. fibrisolvens AcTF2, 49, H17c, and D1 indicated that the xylobiase activities were cell associated and that the xylanase activities were predominantly associated with the culture fluid. The pattern of expression of these enzymes varied both between strains and between the carbon sources on which the strains were grown.

PubMed Disclaimer

References

    1. Appl Microbiol. 1968 May;16(5):781-6 - PubMed
    1. Appl Microbiol. 1967 Sep;15(5):987-93 - PubMed
    1. Appl Microbiol. 1975 Mar;29(3):374-81 - PubMed
    1. J Bacteriol. 1956 Jul;72(1):16-21 - PubMed
    1. J Bacteriol. 1965 Jun;89:1515-20 - PubMed

Publication types

LinkOut - more resources